1 /*
   2  * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 
  25 /*
  26  * @test
  27  * @summary Test JVM's awareness of cpu sets (cpus and mems)
  28  * @library /testlibrary /testlibrary/whitebox
  29  * @build AttemptOOM CPUSetsReader sun.hotspot.WhiteBox PrintContainerInfo
  30  * @run driver ClassFileInstaller -jar whitebox.jar sun.hotspot.WhiteBox sun.hotspot.WhiteBox$WhiteBoxPermission
  31  * @run driver TestCPUSets
  32  */
  33 
  34 import java.util.List;
  35 import com.oracle.java.testlibrary.Common;
  36 import com.oracle.java.testlibrary.DockerRunOptions;
  37 import com.oracle.java.testlibrary.DockerTestUtils;
  38 import com.oracle.java.testlibrary.Asserts;
  39 import com.oracle.java.testlibrary.Platform;
  40 import com.oracle.java.testlibrary.Utils;
  41 import com.oracle.java.testlibrary.OutputAnalyzer;
  42 
  43 
  44 public class TestCPUSets {
  45     private static final String imageName = Common.imageName("cpusets");
  46 
  47     public static void main(String[] args) throws Exception {
  48         if (!DockerTestUtils.canTestDocker()) {
  49             return;
  50         }
  51 
  52         Common.prepareWhiteBox();
  53         DockerTestUtils.buildJdkDockerImage(imageName, "Dockerfile-BasicTest", "jdk-docker");
  54 
  55         try {
  56             // Sanity test the cpu sets reader and parser
  57             CPUSetsReader.test();
  58             testTheSet("Cpus_allowed_list");
  59             testTheSet("Mems_allowed_list");
  60         } finally {
  61             DockerTestUtils.removeDockerImage(imageName);
  62         }
  63     }
  64 
  65 
  66     private static void testTheSet(String setType) throws Exception {
  67         String cpuSetStr = CPUSetsReader.readFromProcStatus(setType);
  68 
  69         if (cpuSetStr == null) {
  70             System.out.printf("The %s test is skipped %n", setType);
  71         } else {
  72             List<Integer> cpuSet = CPUSetsReader.parseCpuSet(cpuSetStr);
  73 
  74             // Test subset of one, full subset, and half of the subset
  75             testCpuSet(CPUSetsReader.listToString(cpuSet, 1));
  76             if (cpuSet.size() > 1) {
  77                 testCpuSet(CPUSetsReader.listToString(cpuSet));
  78             }
  79             if (cpuSet.size() > 2) {
  80                 testCpuSet(CPUSetsReader.listToString(cpuSet, cpuSet.size()/2 ));
  81             }
  82         }
  83     }
  84 
  85 
  86     private static DockerRunOptions commonOpts() {
  87         DockerRunOptions opts = new DockerRunOptions(imageName, "/jdk/bin/java",
  88                                                      "PrintContainerInfo");
  89         opts.addDockerOpts("--volume", Utils.TEST_CLASSES + ":/test-classes/");
  90         opts.addJavaOpts("-XX:+UnlockDiagnosticVMOptions", "-XX:+PrintContainerInfo", "-cp", "/test-classes/");
  91         Common.addWhiteBoxOpts(opts);
  92         return opts;
  93     }
  94 
  95 
  96     private static void checkResult(List<String> lines, String lineMarker, String value) {
  97         boolean lineMarkerFound = false;
  98 
  99         for (String line : lines) {
 100             if (line.contains(lineMarker)) {
 101                 lineMarkerFound = true;
 102                 String[] parts = line.split(":");
 103                 System.out.println("DEBUG: line = " + line);
 104                 System.out.println("DEBUG: parts.length = " + parts.length);
 105 
 106                 Asserts.assertEquals(parts.length, 2);
 107                 String set = parts[1].replaceAll("\\s","");
 108                 String actual = CPUSetsReader.listToString(CPUSetsReader.parseCpuSet(set));
 109                 Asserts.assertEquals(actual, value);
 110                 break;
 111             }
 112         }
 113         Asserts.assertTrue(lineMarkerFound);
 114     }
 115 
 116 
 117     private static void testCpuSet(String value) throws Exception {
 118         Common.logNewTestCase("cpusets.cpus, value = " + value);
 119 
 120         DockerRunOptions opts = commonOpts();
 121         opts.addDockerOpts("--cpuset-cpus=" + value);
 122 
 123         List<String> lines = Common.run(opts).asLines();
 124         checkResult(lines, "cpuset.cpus is:", value);
 125     }
 126 
 127     private static void testMemSet(String value) throws Exception {
 128         Common.logNewTestCase("cpusets.mems, value = " + value);
 129 
 130         DockerRunOptions opts = commonOpts();
 131         opts.addDockerOpts("--cpuset-mems=" + value);
 132 
 133         List<String> lines = Common.run(opts).asLines();
 134         checkResult(lines, "cpuset.mems is:", value);
 135     }
 136 
 137 }